And what does it do? I have two Nightblades as two Templars, so I have no idea what the move is. Unless, it's a morphed skill from mages guild or assault or support?
Pulsar, the morph of the Destruction Staff skill Impulse:
"Release a surge of elemental energy to deal [x] Magic Damage to nearby enemies and afflict them with Minor Mangle, which reduces their Max Health by 10% for 33 seconds."
I see some mageblades using it in PvP, though I tend to use Elemental Ring for that added DoT. That's just my preference due to the racials (Dunmer) along with the CP bonus. That was before the patch though, so I'll have to check how well my build works once I'm able to play again.